Table 2. The scores distribution of elderly ability assessment.

Items	Intact ability (N=1,916)	Mild disability (N=866)	Moderate disability (N=42)	Severe disability (N=54)	χ2/F	P
Activities of daily living	100.0±0.00	78.2±9.84	54.6±7.55	24.7±6.30	15.180	0.042
Mental state	0.0±0.00	1.1±0.24	2.1±0.28	4.2±0.55	2.205	0.018
Perception and communication	0.9±0.41	3.7±1.19	6.4±1.47	8.1±1.95	3.371	0.011
Social participation	1.4±0.38	5.7±1.18	10.6±2.11	16.3±4.28	5.098	0.003